Rewiring a House Cost UK 2026: When You Need It & What to Budget
Real Prices, Warning Signs, Part P Rules & How to Compare Quotes
Quick Answer
Rewiring a house in the UK costs £2,000 to £8,500 in 2026 depending on size. A 1-bed flat is £2,000 to £3,500. A 3-bed semi is £3,500 to £6,000. A 4-bed detached runs £5,000 to £8,500. London adds 25 to 30 percent. Always use a NICEIC, NAPIT, ELECSA, or Stroma registered electrician for Part P certification - it affects future house sales and rental compliance.
Rewiring is one of those jobs that becomes urgent fast. A house with cloth-covered cables, a fuse box from the 1970s, or sockets that get warm under normal use is not just inconvenient - it is a fire risk. The good news: a typical UK rewire is more affordable than most homeowners expect, and it pays back through safety, insurance, and house value.
This guide covers real 2026 prices by property size, the warning signs that point to a rewire being overdue, what is in a quote, and the Part P rules that affect house sales. It also covers the question most homeowners ask: full rewire, or just kitchen and bathroom?
In This Guide
- 2026 prices by property size, full rewire and partial
- Regional variation across the UK
- What is actually in a rewire quote
- Warning signs that point to a rewire being overdue
- Part P certification, EICs, and EICRs explained
- Full vs partial rewire: when each makes sense
- How to choose a registered electrician and avoid common pitfalls
Cost by Property Size
Rewiring scales with property size more than anything else. More rooms means more cable runs, more sockets, more switches, and more wall to chase and patch. Here are typical UK 2026 ranges.
| Property Size | Full Rewire (fitted) | Partial Rewire (fitted) | Typical Duration |
|---|---|---|---|
| 1-bed flat | £2,000 to £3,500 | £800 to £1,800 | 3 to 5 days |
| 2-bed flat or terrace | £2,500 to £4,500 | £1,000 to £2,200 | 4 to 7 days |
| 3-bed semi | £3,500 to £6,000 | £1,500 to £3,000 | 5 to 10 days |
| 4-bed detached | £5,000 to £8,500 | £2,000 to £4,000 | 7 to 14 days |
| 5+ bed period property | £7,000 to £12,000+ | £3,000 to £6,000+ | 10 to 20 days |
Prices include cable, accessories, consumer unit, labour, certification, and basic making good. Period properties with non-standard wiring routes and lath-and-plaster walls run 20 to 40 percent above these ranges.
Regional Price Differences
Day rates for electricians vary significantly across the UK. London and the South East are the most expensive. Northern England, Wales, and Scotland are the most affordable.
| Region | 3-bed semi (full rewire) | 4-bed detached (full rewire) | Day rate (electrician) |
|---|---|---|---|
| London | £4,500 to £7,500 | £6,500 to £11,000 | £280 to £400 |
| South East | £4,000 to £6,800 | £5,800 to £9,800 | £250 to £360 |
| South West | £3,700 to £6,300 | £5,300 to £8,900 | £220 to £320 |
| Midlands | £3,400 to £5,800 | £4,800 to £8,200 | £200 to £290 |
| North England | £3,200 to £5,500 | £4,500 to £7,800 | £190 to £270 |
| Scotland | £3,400 to £5,800 | £4,700 to £8,000 | £200 to £290 |
| Wales | £3,200 to £5,500 | £4,500 to £7,800 | £190 to £270 |
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What is in a Rewire Quote?
A clear rewire quote breaks down every component. Expand each card for what to look for and how it affects the final price.
Warning Signs You Need a Rewire
Some signs are urgent (stop using and call an electrician today). Others mean a rewire is overdue but not an emergency. If you see two or more of these, plan a rewire within 6 to 12 months.
Old fuse box with rewireable fuses (no RCDs)
A clear sign the system is at least 30 to 40 years old. Modern consumer units have RCD or RCBO protection on every circuit. Old fuse wire blew when overloaded but did not detect earth faults that protect against shocks.
Cloth-covered, rubber-insulated, or lead-sheathed cables
These cable types stopped being installed in the 1960s and 1970s. The insulation breaks down over time, causing short circuits or fire risk. If you see them in the loft, behind sockets, or in the consumer unit, plan a rewire.
Black round-pin sockets or bakelite switches
Pre-1947 fittings. Anything original from before the 1960s should have been replaced decades ago. Often a sign that hidden wiring is also period and needs replacing.
Persistent tripping breakers or fuses blowing
Modern circuits are designed to handle typical household load. Repeated tripping under normal use suggests an overloaded circuit, a fault, or undersized cabling for current demand.
Sockets warm to touch or burning smell
Stop using the affected socket immediately and call an electrician. This indicates a fault, loose connection, or overloaded cable - all serious fire risks.
No earth wires on metal switches or sockets
A pre-1960s problem mostly. If you remove a metal faceplate and see no earth wire (green and yellow striped), the system is unsafe and should not be used. Common in old period properties.
If you see any of these, stop using the circuit immediately
Sockets warm to touch, burning smell from outlets, sparking when you plug in, or repeated breaker trips on the same circuit are signs of an active fault. Switch the circuit off at the consumer unit and call a Part P registered electrician the same day. Do not wait.
Full vs Partial Rewire
Not every electrical job is a full rewire. Three common scopes cover most UK homes, and the right choice depends on age, last work date, and which rooms are causing issues.
Full Rewire
- Every cable, socket, switch replaced
- New consumer unit with full RCBO
- Best for: 30+ year old homes, rewireable fuse boxes
- Duration: 5 to 14 days
- Major disruption, plus 2 to 4 days plastering
Partial Rewire
- Kitchen, bathroom, and consumer unit
- Most common UK request
- Best for: rest of house was rewired in last 20 years
- Duration: 2 to 5 days
- Often combined with kitchen renovation
Consumer Unit Only
- Replace fuse box, keep all cables
- Adds RCD/RCBO protection only
- Best for: cables are sound but board is old
- Duration: 1 day
- £400 to £900 fitted
When partial rewire is the right call
If your rest-of-house cabling tested fine on a recent EICR but the kitchen and bathroom are dated or non-compliant, a partial rewire (kitchen + bathroom + consumer unit) is usually the best value. It addresses the wet rooms (where electrical safety matters most), modernises the consumer unit, and keeps living and bedroom cables that are still sound.
Part P, EIC and EICR Explained
Three pieces of paperwork matter for any UK electrical work. Get all three right and you avoid problems with house sales, insurance, and rental compliance.
The 3 documents you need
- Part P notification: Building Regulations notify your local authority of the work. A registered electrician (NICEIC, NAPIT, ELECSA, or Stroma) self-certifies. Without it, you must apply to Building Control separately (£200 to £600).
- Electrical Installation Certificate (EIC): issued at completion of new work. Confirms the installation meets BS 7671 (18th Edition Wiring Regs). You should receive this within 30 days of completion. Store with property documents.
- Electrical Installation Condition Report (EICR): a periodic safety inspection of an existing installation. Costs £150 to £350. Owner-occupiers should get one every 10 years. Landlords legally required every 5 years (since April 2020).
Without registration, expect delays on house sale
Conveyancing solicitors check for EICs on any electrical work declared in the Property Information Form. Missing or non-compliant paperwork can hold up a sale for weeks while retrospective Building Control sign-off is arranged. Always insist on a registered electrician - the small premium pays back many times over.
How to Choose a Good Electrician
Electrical work is technical and safety-critical. The right electrician matters more than the lowest price.
Electrician checklist
- Registered scheme membership: NICEIC, NAPIT, ELECSA, or Stroma. Verify by searching their public register (e.g. niceic.com).
- Public liability insurance: minimum £2 million cover. Ask for proof.
- 3 itemised quotes: compare like for like. Watch for missing line items (consumer unit type, RCBO vs split-load, scope of making good).
- Confirm scope of making good: who plasters chased walls, who paints? Often a separate cost the homeowner has to arrange.
- Ask for recent references: a good electrician should give you names and numbers of homeowners with similar projects in the last 6 months.
- Day rate transparency: the headline price often hides daily rate plus number of days. Always confirm both.
Key Takeaways
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